Items

Training Set

Test Set

Prediction Set

Total

Number

1021

1039

4917

6977

Age ± SD

50.1 ± 19.55

51.08 ± 19.01

48.01 ± 20.78

48.78 ± 20.38

Gender

Male

716

765

3267

4748

Female

305

274

1650

2229

Province of origin

Beijing

477

476

2012

2965

No Beijing

544

563

2905

4012

Days of hospitalization ± SD

25.69 ± 18.15

24.04 ± 15.63

24.13 ± 20.71

24.34 ± 19.67